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This question: 1 points) possible ty The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below our 40 60 Commute Time (minutes), x Well-Being Index Score, y 15 30 5 72 105 09.0 68.0 66.6 66.0 64.7 64.6 61.7 ud (a) Find the least-squares regression line treating the commute time, x, as the explanatory variable and the index score, y, as the response variable -0.0 (Round to three decimal places as needed.) cud (b) Interpret the slope and y-intercept, if appropriate First interpret the slope. Select the correct choice below and, if necessary, fis in the answer box to complete your choice. des OA For every unit increase in index score, the commute time falls by, on average. Bass (Round to three decimal places as needed) cudi OB. For a commute time of zero minutes, the index score is predicted to be (Round to three decimal places as needed) turk minutes ata OC. For an index score of zero, the commute time is predicted to be (Round to three decimal places as needed.) at OD. For every unit increase in commute time, the index score fals by on average (Round to three decimal places as needed.) E It is not appropriate to interpret the slope aird Interpret the y-intercept Select the correct choice below and, e necessary, fit in the answer box to complete your choice. n Time Remaining: 01:16:24 Submit test Next
Submit tast The data below represent commute times (in minutes) and scores on a well-being survey. Complete parts (a) through (d) below. Commute Time (minutes), Well-Being Index Score, y 5 15 30 40 60 72 105 69.0 68.0 666 66.0 64.7 646 61.7 OA For every unit increase in commute time, the index score falls by (Round to three decimal places as needed.) on average OB For every unit increase in index score, the commute time falls by (Round to three decimal places as needed.) on average minutes OC For an index score of zero, the commute time is predicted to be (Round to three decimal places as needed) OD. For a commute time of zero minutes, the index score is predicted to be (Round to three decimal places as needed.) OE It is not appropriate to interpret the y-intercept because a commute time of zero minutes does not make sense and the value of zero minutes is much smaller than those observed in the data at (c) Predict the well-being index of a person whose commute time is 25 minutes The predicted index score is (Round to one decimal place as needed.) (d) Suppose Barbara has a 20-minute commute and scores 66.7 on the survey:is Barbara more well-off than the typical individual who has a 20-minute commute? Select the correct choice below and it in the anewer box to complete your choice (Round to one decimal place as needed.) A No Bakar hare the ma 30minde de ses Time Remaining: 01:56:08 Next 1370
Submit test The data below represent commute times on minutes) and scores on a well being survey Complete parts (a) through ( Commute Time (minutes),x Well-Being Index Score, y 5 15 30 40 00 72 105 600 68.0 66.6 660 647 648 617 O For every unit increase in index score, the commute time falls by on average (Round to three decimal places as needed) OC. For an index score of zero, the commute time is predicted to be minutes (Round to three decimal places as needed) OD. For a commute time of zero minutes, the index score is predicted to be (Round to three decimal places as needed.) OE Its not appropriate to interpret the y-intercept because a commute time of zero minutes does not make sense and the value of zaro minutes is much smaller than those observed in the dataset (c) Predict the wed-being index of a person whose commute time is 25 minutes The predicted index scate is (Round to one decimal place as needed) W (d) Suppose Barbara has a 20-minute commute and scones 66.7 on the survey is Barbara more well-off than the typical individual who has a 20-minute commute? Select the correct choice below and it in the answer box to complete your choice. (Round to one decimal place as needed.) OA No, Barbors is less well-off because the typical individual who has a 20-minute commute scores O. Yes, Barbara is more well-off because the typical individual who has a 20-minute commute scores Time Remaining: 01:55:52 Next
Construct a confidence interval for P₁ P₂ at the given level of confidence. x₁ =371, n₁ =529, x₂ = 417, n₂ = 594, 99% confidence The researchers are confident the difference between the two population proportions, P₁ P2, is between and (Use ascending order. Type an integer or decimal rounded to three decimal places as needed.)